Making Snow and Ice Removal More Environmentally Friendly Team Introductions Christopher Armstrong Client Liason Mark Johanning Editor Will Kenny Project Engineer David McIlwaine Project Engineer Robbie Wilson Project Manager Client and Company Todd Cavender Environmental Manager BAA Indianapolis LLC Indianapolis International Airport Project Description Airport Deicing Propylene Glycol EPA updating regulations for 2009 Currently these are not available for public review FAA Competition Adequate design for airports nation wide Apply design at Indianapolis Project Approach Preliminary Feasibility Study Design Options Assessment of Design Options Preliminary Feasibility Study Watershed Maps Site Visit Checking BOD Levels in Retention Basins Current Operation Glycol is sprayed onto planes runways Sent to retention basin with storm runoff Diluted and released to stream Codes and Regulations FAA Design Guidelines EPA Water Regulations NPDES Permit Recycling of Chemicals Collect used Glycol separate from storm runoff Filter and Distill Glycol to raise concentration for resale Minimize glycol in environment Infrared Systems Currently in JFK and Buffalo Use of infrared heat to deice aircraft Warms aircraft surface to lower need of antiicing Redesign of Deicing Pods Centralized Deicing Pods Gutter collection Helps facilitate recycling Already implemented by Fed Ex Assessment of Design Options Discussed most important criterion with Todd Cavender The rankings were determined by DSL and agreed upon by our client Todd Cavender Capital Cost Rating Effect on Environment Rating 0 2 million 3 Significant Benefit 3 2 10 million 2 Slight Benefit 2 10 million and up 1 No Benefit 1 Operation Cost Rating Deicing Time Rating Cost Reduction 3 Shorter Deicing Time 3 Equal Cost as Current Use 2 Equal Deicing Time 2 Cost Increase 1 Longer Deicing time 1 Client Weighting Criterion Weight Capital Cost 30 Operation Cost 20 Environment 10 Deicing Time 40 Decision Matrix Aircraft Deicing Redesign of Pods Score Weighted Score 2 0 60 3 0 60 3 0 30 3 1 20 Total 2 70 Location Layout The Pond will be located just southwest of FedEx operations directly west of a service road Pod Design aircraft flow Pod Design runoff flow Pond Size Pond will hold deicing and anti icing fluids as well as water runoff due to winter storm events for a period of ten days Snow can be converted to liquid by multiplying the amount by 1 10 135 years of snowfall data showed 12 1 inches to be the peak daily snowfall Statistics From looking at probability statistics and accounting for our client s wishes DSL determined that 1 5 storm events could occur in the ten day period This results in a liquid runoff of 1 815 inches per acre Pods total area is 24 05 acres Using IIA deicing statistics 17 000 gallons of ADF fluid was used per inch of snow Final Sizing The pond will have a geomembrane lining preventing filtration into underlying soils The 2 1 slope will help prevent growth of weeds Water fowl will be repelled using the same methods currently used at other IIA ponds and basins The pond will be properly fenced ensuring the safety of those around it ADF Runoff 308 000 gal Water Runoff 1 185 mill gal 1 5 Million Gallons Pipe and Channel Sizing Time of concentration and IDF curves used to get storm intensity Rational equation used to find 50 year design flows Manning s equation used to size channel and pipes Use concrete rectangular channel and standard size concrete pipes Pipe and Channel Sizing Channel is 7 5 feet wide and 3 feet deep Built 3 5 feet deep for half foot of freeboard Culvert between pod two and three has diameter of 7 feet Pipe from channel to pod one has diameter of 7 feet Pipe from pod one to pond has diameter of 6 feet Smaller diameter is due different time of concentration and tributary area Pipe and Channel Sizing Best Management Practices BMP Enclosed Basket Deicing Trucks Allows deicer to get closer to aircraft More direct application less waste Forced Air System Use forced air when applying deicing fluid Helps remove snow and cuts on fluid use BMPs BMPs Preventative Anti icing Watch weather patterns and apply antiicing fluids before ice can form FAA provides a weather watch service Lessens need to deice aircraft Hangar Storage No condensation overnight which eliminates ice formation Heated hangars can deice planes that can sit between flights BMPs Enclosed basket deicing trucks and forced air systems can be used together to reduce fluid use further Preventative anti icing is the timing of application so it can be used to enhance any BMP Hangar storage requires large financial and land contributions and is thus not recommended BMPs IIA is to implement three best management practices Forced Air Enclosed Basket Preventative Anti icing This reduces ADF use by 60 Reductions From BMPs 1 6 1 5 1 4 1 18 1 2 1 3 1 Million 0 8 Gallons 0 6 0 4 0 2 0 Without BMPs With BMPs 0 308 0 120 ADF Use Water Runoff Tank Size Costs Pipe Cost Item Means Reference Details Quantity Unit Piping network Pipe Bare Costs Total Cost 4 415 000 00 4 415 000 02510 810 3080 3725 3 L F 288 50 1 075 000 00 3292 L F 236 55 780 000 00 7 Diameter Prestressed PCCP 150 PSI Pipe 02510 810 3070 6 Diameter Prestressed PCCP 150 PSI Trenching A12 3 110 1460 0 to 1 slope 8 wide 12 deep 1 1 4 Cubic Yard Bucket 7017 3 L F 21 26 149 000 00 Roadway Removal 02220 875 2100 Concrete 7 to 24 thick reinforced 42448 C F 56 79 2 411 000 00 Pavement 02750 100 0500 Fixed form 12 pass 15 thick 2358 S Y 33 73 80 000 00 Costs Pod Cost Item Means Reference Details Quantity Unit Bare Costs 3 245 000 00 3 245 000 Deicing Pod Pavement Total Cost 02750 100 0500 Fixed form 12 pass 15 thick 96219 S Y 33 73 3 245 000 00 Pond Cost Item Means Reference Details Quantity Unit Bare Costs Total Cost 160 000 00 160 000 Pond Excavation 02315 400 0300 Hauling 02320 200 0540 lining 02660 400 0300 backhoe hydraulic crawler mtd 3 C Y cap 160 C Y hr 7 500 C Y 2 00 12 C Y dump truck 5 mi round trip 1 load hr 7 500 C Y 8 09 Membrane Lining HDPE 120 mil thick 50 000 SF 1 68 15 000 00 61 000 00 84 000 00 Costs Total Cost Total Cost of Piping 4 415 000 00 Total Cost of Deicing Pods 3 245 000 00 Total Cost of Pond Total Cost of Project 160 000 00 7 820 000 00